Finding the Fourth Proportional to 839,876,569.20, 1,259,814,853.80 and 717,432,562.80
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Solution
The fourth proportional to 839,876,569.20, 1,259,814,853.80 and 717,432,562.80 is: 1,076,148,844.20
Step by Step Solution
- Step 1: Write the proportion equation
839,876,569.20 : 1,259,814,853.80 = 717,432,562.80 : x - Step 2: Convert to fraction form
839,876,569.20/1,259,814,853.80 = 717,432,562.80/x - Step 3: Cross multiply
839,876,569.20x = 1,259,814,853.80 × 717,432,562.80 - Step 4: Simplify right side
839,876,569.20x = 903,832,199,215,241,216 - Step 5: Solve for x
x = 903,832,199,215,241,216/839,876,569.20 - Step 6: Final answer
x = 1,076,148,844.20
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.